Lighting fixture



Nov. 15, 1927.

R. W. SCHWEiKER.

LIGHTING FIXTURE:

Filed Auzz. 12. 1926 Patented Nov. 15, 1927.

PATENT OFFICE.

ROY W. SCHWEIKE'R, OF LANSDALE, PENNSYLVANIA.

LIGHTING FIXTURE.

Application filed August 12, 1926. Serial No. 128,851.

This invention relates to lighting fixtures and, more particularly, toan improved means for holding the lamp socket in position on thefixture, especially in a fixture of porcelain or similar material,although it is to be understood that the invention is not limited inthat respect.

The object of the invention is to provide a simple, inexpensive, easilyapplied and removed fastening means by which the lamp socket may bemounted and secured inthe fixture without liability of loosening,turning, or displacement. v

In carrying out the invention I provide two rings, adapted to be locatedon opposite sides of the flange Within the fixture and to be clampedbetween the sections of the lamp socket when they are connected, meansbeing providedto prevent the rings from turning and also to prevent thesocket from turning. j

The rings-are so constructed that when the sections of the socket arescrewed up, certain parts are-flexed and a very secure fit is obtained.

A practical embodiment of the invention comprises an outer ring whichhas projections, thus enabling the projections to be cut down to snuglyfit the inside of the porcelain fixture and to center this ring eventhough the cavity in the fixture varies in size; and an inner ringprovided with points or projections, enabling one of them to be bentdown into a notch provided for its reception in the flange on thefixture, thereby preventing rotation of the rings. This inner ring alsohas a projection to iit into a notch in the inner section of theinsulating part of the lamp socket to prevent the insulating socket fromturning. The inner ring and the points or projections are arranged inoffset relation to each other, being connected by a shoulder whichallows the two rings to come closely together but does not permit themto interfere with the tension which. is exerted on them by the screwingtogether of the sections: of the lamp socket.

In the accompanying drawings:

Figure 1, is a front elevation, partly in section;

Fig. 2, is a vertical section;

Fig. 3, is a rear View, parts of the sectional lamp socket being brokenaway;

Fig. 4, is an edge View, broken away, of the inner ring;

Fig.- 5, is av front face view thereof; and

Flg. 6, is a face view of the outer ring.

The-porcelain fixture 1 is of the same general type as illustrated incertain of my ear-her applications for patent but the design thereofdoes not enter into the present nvention. This fixture is provided withan lnner flange 2 and a recess or cavity 3. The lamp socket, asillustrated, comprises inner and outer porcelain sections 4 and'5, and ashell 6 of ordinary construction into which the electric bulb screws,.these sectrons being adapted to lie on opposite sides of the flange 2;the outer part having screw threads which engage the shell 6, thusenabling the sections to be screwed up to clamp against the flange 2 thetwo rings 7 and 8 which lie on opposite sidesof said flange, said ringsconstituting my present invention.

The outer ring 7 is preferably of metal having a certain degree ofinherent resiliency. Said ring has fins, points, or projections 9 whichare originally of a suflicient length to enable them to be cut off tothe desired extent by a pair of shears so that they will snugly fitwithin the recess or cavity 3 and engage the Wall thereof. This enablesthe ring 7 to be centered in the cavityand to be sprung into positionregardless of any irregularities existing in the walls of the cavity.

The inner ring Sis provided with a struckup lug or fin 10 for receptionin a notch 11 in the section t to prevent the ring 8 from turning. Thisfeature by itself is not novel with me and no claim is made to it pers-e.

The ring 8 is provided with quite a number of fins or projections 12which are connected by an offset part 13 or shoulder to the ring 8. Thisenables the ring 8 to be drawn snugly against the rear of the flange 2all the way around and also insures that one of the fins will be closelyrelated to a notch 14 provided in the flange 2 so that it may be bentdown into said notch as shown at 15 to thereby prevent the ring 8 andhence the socket and the outer ring 7 from turning within the fixturebecause the screwing up of the outer part 5 of the socket tensions thetwo rings 8 and holds them snugly against opposlte S1(lQS of the flange2. The inner ring 8 being locked against rotation and the inner section4; being locked against rotation relative to the ring 8, the tensionprevents any of the parts from turning. The shoulder Which is providedon the ring 8 enables the rings 7 and 8 to lie close together when undertension, thus making a snug and secure joint.

My improvements have many advantages and in addition to those previouslyset forth,

there remains the fact that it is unnecessary to provide any bolts,screws, nuts or other special fastenings to hold the sections of thelamp socket in position. When the rings are located, the screwing up ofthe sections of the socketautomatically tightens the parts and resultsin a secure connection. It is then only necessary, when it is desired todisconnect the sections of the socket, to unscrew the outer sect-ion 5.

lVhat I claim is:

1. In a lighting fixture, the combination with a fixture shell or bodyhaving lamp socket engaging means, of a sectional lamp socket, and ringsheld between the sections of said socket, one of said rings beingprovided with means engaging the fixture to prevent rotation of saidring, and also having means to engage the lamp socket to prevent saidsocket from turning, said rings being located on opposite sides of theengaging means aforesaid and clamped thereagainst by the tension exertedon them by the sections. of the socket.

2. In a lighting fixture, th combination with a fixture shell. or bodyhaving a recess or cavity and an internal flange. of a. sectiona1 lampsocket, and two rings held between the sections of said socket, one"ring being provided with outstanding fins or projections bearing on theflange aforesaid and also adapted to bear on the wall of said cavity tocent-er said ring, the remaining ring being provided with fins whichbear on the opposite side of the flange, one of said fins having alocking engagement with the fixture to prevent rotation of said ring,said rings being clamp-ed against opposite sides of the flange by thetension exerted on them by the sections of the socket.

3. Means for mounting a sectional electric lamp socket on a support,comprising a pair of flexible clamping rings, one of which hasprojections to center and hold it in position on the object on which thelamp socket is to be mounted, the other ring being provided withshouldered fins or projections, one of which may be made to lock withthe object on which the lamp socket is to be mounted, thereby to preventturning of the rings, said rings being adapted to be tensioned by thetightening of the sections of the aforesaid lamp socket.

4. The combination with an apertured object, of a sectional electriclamp socket, and means for mounting the lamp socket in said aperturedobject, comprising a pair of flexible clamping rings having partsthereof located between the sections of the lamp socket and adapted tobe tensioned thereby, said rings being located on opposite sides. of theobject where the aperture is located and both engaging said object, oneof said rings being provided with projections, the other ring havingshouldered fins, one of said fins being utilizable as a means to lockwith the object aforesaid, said rings being clamped against 7 the objectby the tensioning action of the parts of said socket. I In testimonywhereof I afiix my signature.

ROY W, SCHW'EIKER;

